Garage conversion rules in Horn Lake, MS β sometimes called garage-to-ADU or accessory living unit conversions β govern permits, ceiling height, egress, and parking replacement.
Converting a Horn Lake garage to habitable space requires a residential building permit from Planning and Development (3101 Goodman Rd. W.) plus zoning verification under Appendix A (Zoning) of the Code of Ordinances. The work must meet the Mississippi-adopted International Residential Code. Loss of required off-street parking is the most common denial reason. Call Planning at (662) 393-6705.
Horn Lake Planning and Development administers building permits and zoning compliance from 3101 Goodman Road West. A garage-to-living-space conversion is a change of use that requires a residential building permit (with electrical, mechanical, and plumbing sub-permits as applicable) and zoning verification before construction begins. The completed space must comply with the Mississippi State Building Code (Mississippi Code Section 17-2-1 et seq.), which adopts the International Residential Code: minimum 7-foot ceiling height for habitable rooms (IRC R305), egress window in any new sleeping room (IRC R310), interconnected smoke and carbon monoxide alarms (IRC R314/R315), and insulation meeting the adopted IECC. Zoning review under Appendix A confirms the conversion still meets the residential off-street parking minimum (Article XI), maximum lot coverage, and accessory-use rules; eliminating the only enclosed parking required by the underlying district will block approval. Mississippi has no statewide ADU preemption, so a single-family lot generally cannot be converted into a two-unit rental absent a use change. Schedule inspections through the Planning Clerk at (662) 342-3549.
Converting a garage without a building permit, or eliminating the required off-street parking space, violates Chapter 8 of the Code of Ordinances and the Zoning Ordinance and can trigger stop-work orders, fines, and removal orders. Unpermitted work also blocks the Certificate of Occupancy and complicates resale and insurance claims.
Horn Lake, MS
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